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A parabolic velocity profile is desired at the end of a 10-m-long, 8-mm-diameter tube attached to a tank filled with 20-C water. An experiment is run during which 60 L is collected in 90 min. Is the laminar flow assumption reasonable? If so, would the tube be sufficiently long?
An ideal fluid in a pipe of diameter 14cm is moving at 6.0 m/s. If the incompressible fluid density is 1.05g/cc, what is the flow rate in kg/s and what is the speed of flow if the pipe narrows to 4.0cm radius?
A 75.0 kg archer, standing on frictionless ice, shoots a 200 g arrow at a speed of 110m/s to the right. What is the velocity of the archer after the shot
A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0-cm-thick sealed layer of air in between. (Use 0.8 J/s · m · °C for the thermal conductivity of glass and 0.0234 J/s · m ·
if the proton proton chain is the only nuclear reaction that happens in a star what is the total number of hydrogen
describe the various ways that you encounter and utilize different em radiation in your daily life.original work
You have one lens with a focal length f1=+43.2 cm. If you want to produce an image of the bulb that is enlarged by a factor of 2.90, how far from the wall should the lens be placed
a collie drags its bed box across a floor by applying a horizontal force of 8.0 n. the kinetic frictional force acting
The cathode-ray tubes that generated the picture in early color televisions were sources of x rays. what are the shortest-wavelength x rays produced by the television
A physics professor demonstrates the Doppler Effect by tying a 600. Hz sound generator to a 1.00-meter-long rope and whirling it around his head in a horizontal circle at 100 rpm. What are the highest and lowest frequencies heard by a student in the ..
A firm wants to calculate the amount of frictional torque in their current line of grindstones; therefore they can redesign them to be more energy efficient. Find what is the frictional torque exerted on the grindstone
Roles of Projects Managers
A circular coil of wire with 70.0 Loops and a radius of 0.250 m is placed in a magnetic field of 10.0 T and oriented so that the coil is perpendicular to the field. Find the maximum power developed in the coil
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